Hammerhead



FIG. 1 is a perspective view of a hammerhead, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rigth side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The handle attached to the hammerhead is shown in broken lines for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a hammerhead, as shown and described. 